Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa930f2481bc183a…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 23:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d9f21f8854260e2b1bffbf6886595574 SHA-1: d02ba2220d4a0090f342edf0cfbcb455f8dc4c90 SHA-256: fa930f2481bc183a8c14692d79cc921a5e008ef118add0951d2e1dd845f41f27
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/406889139/coin-master-hack-download-apk-game-hack PDF link annotation
    • https://ibelive.com.tw/image/data/files/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/give-away-game-in-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/original-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-gift-cards_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/roblox-hacks-trial_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/coin-master-free-spins-moonactive_GM406889139.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-online-games-to-play-now-roblox_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/robux-hack-download-app_GM431946152.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://ibelive.com.tw/image/data/files/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000318b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x318B 23204 bytes
SHA-256: d614708098da5b33d3c8fa83e3fb66fcc7909ab0d0ef75f21558692b893b6a6f
font_01_sfnt_off00006591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6591 18760 bytes
SHA-256: 393c3ef8426a39e9b6674470cb2a36ee253e57910c3930c6f4301b8d61808c7f

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